1312928742 has 16 divisors (see below), whose sum is σ = 2668905072. Its totient is φ = 430468320.

The previous prime is 1312928731. The next prime is 1312928753. The reversal of 1312928742 is 2478292131.

1312928742 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1312928731) and next prime (1312928753).

It is a self number, because there is not a number n which added to its sum of digits gives 1312928742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793253 + ... + 1793984.

It is an arithmetic number, because the mean of its divisors is an integer number (166806567).

Almost surely, 2^1312928742 is an apocalyptic number.

1312928742 is an abundant number, since it is smaller than the sum of its proper divisors (1355976330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312928742 is a wasteful number, since it uses less digits than its factorization.

1312928742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587303.

The product of its digits is 48384, while the sum is 39.

The square root of 1312928742 is about 36234.3585840843. The cubic root of 1312928742 is about 1094.9989900118.

The spelling of 1312928742 in words is "one billion, three hundred twelve million, nine hundred twenty-eight thousand, seven hundred forty-two".